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17 . Input 7 if used for Phone Paging
Tel inputs are balanced, line or mic level
(Refer to Dipswitch Bank 1-8 for setting input
sensitivity). Or wiring unbalanced inputs, tie
(short) the (G) and (-) terminals together.
18 . Inputs 2-4
Inputs 2-4 are balanced, line or mic level
(Refer to Dipswitch Bank 1-8 for setting input
sensitivity). For wiring unbalanced inputs, tie
(short) the (G) and (-) terminals together.
19 . Input 1
Balanced mic or line level signals connect
to the (+) (-) and (G) terminals. Refer to the
chart above "Multi Function Dipswitch" for
the following setting. Dipswitch 6, labeled
Input 1 must be set to the proper position for
mic or Tel/Line level. If you are connecting an
unbalanced line level input, tie (short) the (G)
and (-) terminals together. An optional Input
Isolation Transformer is available if a ground
loop problem exists. Contact Quest for more
details on the Input Isolation Transformer.
Note:
Input 1 has priority over other
channels. The sensitivity and threshold for the
VOX send works in conjunction with the Input
1 Trim and the Input 1 Sens.
20 . Input 1 Sens
This control adjusts how sensitive the mute
send circuitry on INPUT 1 reacts. Setting
the control fully counter-clockwise will lower
the sensitivity, and a higher amplitude signal
will be required at INPUT 1 to trigger the
mute send circuits. Fully clockwise will raise
the sensitivity of the mute circuits, where a
lower amplitude signal will trigger a mute
send. Careful calibration of this control may
be required to fully utilize the mute circuits"
capabilities. Adjustment of this control should
occur after the input trim (19) for channel 1
is set.
21 . Inputs 1-5 Trim
These variable controls allow fine tuning of
the gain of INPUTS 1 - 5. There is 20dB of
variable gain available. The trim only applies
when the input is set to the "Mic" position on
the dipswitch.
22 . Dipswitch "A" Positions 1-6
Understanding the functionality of the
dipswitches is key to getting the most out of the
60w/120w/250w mixer amps. Whether the switch
is in the "Up" or "Down" position is critical to the
function of the amplifier.
Note:
Mispositioning any of these switches
may cause harm to the speakers or amplifier. We
recommended all levels be turned down prior to
making any changes. Pay close attention to the
two assignment charts and manual for proper
settings.
1
2
3
Low Cut Input 6 Input 5 Input 4 Input 3 Input 2
Mute Rcv
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on
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on
Dipswitch 1- LOW CUT
When in the "ON" position, frequencies below
400Hz are attenuated at the rate of 6dB per
octave.
Note:
The rotary bass control is bypassed when
the LOW CUT filter is on. We suggest that when
paging horns are connected to the Mixer amplifier,
engage the LOW CUT filter to prevent the horns
from operating below their cut off frequency. When
"OFF", the amplifier operates full bandwidth.
Dipswitch 2-6 - MUTE RCV (RECEIVE)
When "ON", Input's 2-6 signals will be muted upon
a signal from Input 1 (Refer to Number 11 Input
1Sens), or a contact closure on the remote mute
terminals (Refer to Number 15 Remote Mute).
Q-Tech Commercial Series
QTA 6060M/6120M/6250M
QTA
6000 Series
User Manual
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5
6
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User Manual
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